i can't activate my 30-day free prime trial

[SD_7892827]

i requested and received a .dat license file, but when I apply it I get the following error message:

11/22/2022 12:36:18 PM : The license request failed.
Requesting MathcadPrime ...
C:\Program Files\PTC\Mathcad Prime 8.0.0.0\sw_license_email_90222.dat: (-103) Cannot checkout an uncounted license within a Windows Terminal Services guest session.

I've now tried this twice with two different license files.

[VladimirN · Accepted solution]

• Tip - "Error: "Terminal Server Remote Client Not Allowed" or "(-103)"": https://community.ptc.com/t5/Mathcad-Installation/Error-quot-Terminal-Server-Remote-Client-Not-Allowed-quot-or/m-p/719311#M365 
• Article - "Error "Terminal Server Remote Client Not Allowed" or "(-103) Cannot checkout an uncounted license within a windows terminal services guest session"": https://www.ptc.com/en/support/article/cs23456